Solar panel cleaning that actually restores production.

NREL and independent studies put the production loss from dirty panels at 10–25% depending on tilt, location, and dust exposure. At San Diego electricity rates, a typical 6 kW system loses $150–$400 per year to soiling. Annual cleaning pays for itself and then some.

Not when done correctly. Most panel manufacturers explicitly require clean panels for warranty and prohibit high-pressure water, abrasive brushes, and solvents. We use deionized water, soft solar-specific brushes, and no detergents, which meets or exceeds every major manufacturer's cleaning specification.

Tap water leaves mineral spots that reduce light transmission, you're trading one kind of soiling for another. And walking a tile or shingle roof without a harness is how serious falls happen. For single-story accessible arrays on a low pitch you could do it yourself with a soft brush and DI water. For the other 80% of homes, the risk-versus-reward math points to professional.

Annually for most homes. Quarterly for homes under heavy tree cover, near agricultural fields, or in high-dust corridors (east county, inland Ramona, Poway canyon edges). After every major brush fire or dust event. Before and after spring pollen season if your array faces into a bloom-heavy neighborhood.

Most installers sub out cleaning to third parties and mark it up. We specialize in it. We also clean your windows, skylights, and gutters in the same visit if you want, one truck, one crew, one invoice.